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Is it possible to introduce a new signed attribute in the CMS Advanced Signature format (RFC 5126) for a custom data type? I want to include location data from GPS or Galileo and extend CAdES for my thesis.

I would appreciate it if you can provide me with some directions if it makes sense.

zima blue
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1 Answers1

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IIRC, attributes are identified by their ASN.1 Object IDs. You can use the {joint-iso-itu-t(2) uuid(25)} arc by generating a unique UUID (a.k.a. GUID) without needing to register, and parse it according to ITU-T-Rec-X.667 for use.

DannyNiu
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